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प्रश्न
Explain the progress of ecological succession in newly formed volcanic island.
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उत्तर
- Primary succession starts at places where no living organisms were present before like a newly formed volcanic island.
- Before a biotic community of diverse organisms can be established, there must be soil. Depending mostly on climate, it takes natural processes, several hundred to several thousand years to produce fertile soil on bare rock.
- The species which invade a bare area and initiate the succession are called pioneer species. Crustose lichen grows on the rocks which secretes acid to dissolve rock. This helps in weathering of rocks and formation of soil.
- These conditions become favourable for the next community i.e. bryophytes and mosses take hold of the small amount of soil.
संबंधित प्रश्न
Answer the following question.
List the factors upon which the type of invading pioneer species depends on secondary hydrarch succession. Why is the rate of this succession faster than that of primary succession?
Growth of new grasses and shrubs on a patch of forest burnt down by forest fire, is a an example of ______.
What is ‘Climax community’?
____________ succession begins where no living organisms were present before.
Identify the stage that immediately precedes the sedge meadow stage in hydroseric succession.
Which are the pioneer species in xerarch and hydrarch succession respectively?
Where does secondary succession generally occur?
Transformation of a region from a pool of water to swamp then to marsh and then to mesic condition is an example of ____________.
The sequence of communities of primary succession in water is ______.
What do you mean by pioneer species?
